Water fountain



FIG. 1 is a front left perspective view of a water fountain, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a back right perspective view thereof. 

CLAIM The ornamental design for a water fountain, as shown and described. 